diff options
Diffstat (limited to 'target/linux/adm8668/files/arch/mips/adm8668/pci.c')
| -rw-r--r-- | target/linux/adm8668/files/arch/mips/adm8668/pci.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/target/linux/adm8668/files/arch/mips/adm8668/pci.c b/target/linux/adm8668/files/arch/mips/adm8668/pci.c deleted file mode 100644 index 2bf119297..000000000 --- a/target/linux/adm8668/files/arch/mips/adm8668/pci.c +++ /dev/null @@ -1,171 +0,0 @@ -/* - * Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us> - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/types.h> -#include <asm/byteorder.h> -#include <asm/pci.h> -#include <adm8668.h> - -volatile u32* pci_config_address_reg = (volatile u32*)KSEG1ADDR(PCICFG_BASE); -volatile u32* pci_config_data_reg = (volatile u32*)KSEG1ADDR(PCIDAT_BASE); - -#define PCI_ENABLE 0x80000000 -#define ADMPCI_IO_BASE 0x12600000 -#define ADMPCI_IO_SIZE 0x1fffff -#define ADMPCI_MEM_BASE 0x16000000 -#define ADMPCI_MEM_SIZE 0x7ffffff -#define PCI_CMM_IOACC_EN 0x1 -#define PCI_CMM_MEMACC_EN 0x2 -#define PCI_CMM_MASTER_EN 0x4 -#define PCI_CMM_DEF (PCI_CMM_IOACC_EN | PCI_CMM_MEMACC_EN | PCI_CMM_MASTER_EN) - -#define PCI_DEF_CACHE_LINE_SZ 0 -#define PCI_DEF_LATENCY_TIMER 0x20 -#define PCI_DEF_CACHE_LATENCY ((PCI_DEF_LATENCY_TIMER << 8) | PCI_DEF_CACHE_LINE_SZ) - - -#define cfgaddr(bus, devfn, where) ( \ - (bus ? ((bus->number & 0xff) << 0x10) : 0) | \ - ((devfn & 0xff) << 0x08) | \ - (where & 0xfc)) | PCI_ENABLE - -/* assumed little endian */ -static int adm8668_read_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 *val) -{ - switch (size) - { - case 1: - *pci_config_address_reg = cfgaddr(bus, devfn, where); - *val = (le32_to_cpu(*pci_config_data_reg) >> ((where&3)<<3)) & 0xff; - break; - case 2: - if (where & 1) - return PCIBIOS_BAD_REGISTER_NUMBER; - *pci_config_address_reg = cfgaddr(bus, devfn, where); - *val = (le32_to_cpu(*pci_config_data_reg) >> ((where&3)<<3)) & 0xffff; - break; - case 4: - if (where & 3) - return PCIBIOS_BAD_REGISTER_NUMBER; - *pci_config_address_reg = cfgaddr(bus, devfn, where); - *val = le32_to_cpu(*pci_config_data_reg); - break; - } - - return PCIBIOS_SUCCESSFUL; -} - -static int adm8668_write_config(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - switch (size) - { - case 1: - *pci_config_address_reg = cfgaddr(bus, devfn, where); - *(volatile u8 *)(((int)pci_config_data_reg) + (where & 3)) = val; - break; - case 2: - if (where & 1) - return PCIBIOS_BAD_REGISTER_NUMBER; - *pci_config_address_reg = cfgaddr(bus, devfn, where); - *(volatile u16 *)(((int)pci_config_data_reg) + (where & 2)) = val; - break; - case 4: - if (where & 3) - return PCIBIOS_BAD_REGISTER_NUMBER; - *pci_config_address_reg = cfgaddr(bus, devfn, where); - *pci_config_data_reg = (val); - } - - return PCIBIOS_SUCCESSFUL; -} - - -struct pci_ops adm8668_pci_ops = { - .read = adm8668_read_config, - .write = adm8668_write_config -}; - - -struct resource pciioport_resource = { - .name = "adm8668_pci", - .start = ADMPCI_IO_BASE, - .end = ADMPCI_IO_BASE + ADMPCI_IO_SIZE, - .flags = IORESOURCE_IO -}; - - -struct resource pciiomem_resource = { - .name = "adm8668_pci", - .start = ADMPCI_MEM_BASE, - .end = ADMPCI_MEM_BASE + ADMPCI_MEM_SIZE, - .flags = IORESOURCE_MEM -}; - -#ifdef CONFIG_ADM8668_DISABLE_PCI -struct pci_controller mips_pci_channels[] = { - { NULL, NULL, NULL , NULL , NULL} -}; -#else -struct pci_controller mips_pci_channels = { - .pci_ops = &adm8668_pci_ops, - .io_resource = &pciioport_resource, - .mem_resource = &pciiomem_resource, -}; -#endif - -int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) -{ - switch (slot) - { - case 1: - return 14; - case 2: - return 13; - case 3: - return 12; - default: - return dev->irq; - } -} - -int pcibios_plat_dev_init(struct pci_dev *dev) -{ - return 0; -} - -static int __init adm8668_pci_init(void) -{ - void __iomem *io_map_base; - - printk("adm8668_pci_init()\n"); - - /* what's an io port? this is MIPS... *shrug* */ - ioport_resource.start = ADMPCI_IO_BASE; - ioport_resource.end = ADMPCI_IO_BASE + ADMPCI_IO_SIZE; - - io_map_base = ioremap(ADMPCI_IO_BASE, ADMPCI_IO_SIZE); - if (!io_map_base) - printk("io_map_base didn't work.\n"); - mips_pci_channels.io_map_base = (unsigned long)io_map_base; - register_pci_controller(&mips_pci_channels); - - /* this needed? linksys' gpl 2.4 did it... */ - adm8668_write_config(NULL, 0, PCI_CACHE_LINE_SIZE, 2, 0); - adm8668_write_config(NULL, 0, PCI_BASE_ADDRESS_0, 4, 0); - adm8668_write_config(NULL, 0, PCI_BASE_ADDRESS_1, 4, 0); - adm8668_write_config(NULL, 0, PCI_COMMAND, 4, PCI_CMM_DEF); - - return 0; -} - -arch_initcall(adm8668_pci_init); |